phone interview, followed by an in person tech interview, and finally an HR interview.
The important part is the tech interview, Given some cpp code to explain or fix, some basic mathematical questions from 1st year math in university.
Interview questions [1]
Question 1
read a cpp script, explain it's process, and add minor changes to make it do something else.
casual phone call , asking what is your background and explaning about the compnay and then interview in the company , they ask to find a bug in a printed code and how would you implement a certin Opencv code